FAQs

You need to pay enough tax during the year through withholding or estimated tax payments to avoid penalties and interest. The tax that has to be paid includes any AMT attributable to the exercise of ISOs or any ordinary income from a disqualifying disposition. In these ISO situations, your employer does not...

Estimated-tax periods end on the last days of March, May, August, and December, with payments due by the 15th (or the next business day) of the following month. If you are paying estimated taxes, one strategy is that just after the start of an estimated-tax period you can...